Cause : EtherNet/IP over comes when the Master communication value exceeds the allowable number of the communication cards. This fault indicate Ethernet/IP exceeds the maximum communication value.

1. Decrease the Master communication value.
2. Revise the program of the upper unit to disconnect the connection while the communication is not used for a long time.
3. Revise the program of the upper unit to use the same Modbus TCP connection when connecting to the same communication card.